LMAO yeah right! How can making a huge spider look even bigger cure a phobia?! I don't blimmin' think I'll be doing that in a bid to cure me of my fear.
I commend your bravery on the trap and release system of dealing with things, but they DO come back. I have witnessed definitive proof of this with the biggest ever house spider I have ever seen.
One night, a long time ago, when we lived down south, my sister told me to get out of bed and not to look at the wall next to me. So what did I do? I looked.
There was the hugest spider I have ever seen, it was easily 4". My sister was much braver than me and attempted to fit it under a glass to remove it. Of course it was too big, and she had to use a mixing bowl. The spider was very distinctive and was missing a leg. It's size would make it stand out enough. Anyhoo, she took it out to the garden (which was a very long garden) - right up to the back hedge. Technically there, it was closer to the next house than to ours.
Anyway, she came back to bed, and my Mum (because it was so late and we'd disturbed them with our screams of terror) gave us a right knacking about exaggerating things. No amount of persuasion made her believe us about this spider - we were just kids going over the top.
The next night I was awakened by a scream from my parent's room. The spider was back. She didn't doubt me again!